Typewriter attachment



July 24, 1923- 1,463,080

F. GRAY TYPEWRITER ATTACHMENT Filed Feb. 14 1921 Patented July 2 .1, 1923..

TYPEWRITER ATTACHMENT.

Application med February 14, 1921. Serial no. 4443M.

To all whom it may concern:

Be it known that I, FRANCES GRAY, a citizen of the United States, residing at Wilkinsburg in the county of Allegheny and 6 State of Iennsylvania, have invented a new and useful Typewriter Attachment, of which the following is a specification.

This invention relates to an attachment for typewriters whereby the feeding of the 10 paper by the rotation of the platen or roller can be stopped automatically at any predetermined point so that it does not become necessary for the operator to watch the paper to see that the printed matter does not overrun the lower edge thereof.

A further object is to provide an attach ment of this character which can be easily placed in position on ordinary forms of typewriters and will in no way interfere with the proper operation of the usual typewriter mechanism or detract from the appearance of the machine.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, Within the scope of what is claimed, changes in the so precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings the proferred form of the invention has been shown.

In-said drawings- Figure 1 is an elevation of one end portion of the platen of a typewriter,'showing a portion of the carriage and the attachment mounted thereon.

4o Figure 2 is an enlarged elevation of the attachment, the shaft of the platen being shown in section.

Referring to the figures by characters of reference A designates a portion of the platen of a typewriter, the shaft being shown at B, the knob at C, and a portion of'thecarriage at D.

'A gear 1 is secured on the shaft B and constantly meshes with another gear 2 journaled on a stud 3 extending from the carriage. Hingedly connected to a cap 4 upon the center of the gear 2 is a finger 5 having a lug 6 projecting laterally from its free end and also provided with a finger piece7. Ar-

ranged along the peripheral portion of the v gear 2 are graduations shown at 8 and which can be suitably designated.

. The cap 4 is mounted for rotation relative to the gear 2 and is preferably mounted on a lug 9 extending from the gear. Thus it will be seen that the finger 5 can be adjusted angularly along the face if the gear and the lug 6 can be pressed into engagement with the periphery of the gear between any two adjoining teeth and adjacent any selected graduation. Thus when the platen is rotated to shift the paper motion is transmitted through the gear 1 to the gear 2 and the finger 5 will rotate with the gear 2 until the lug 6 ultimately becomes wedged in the pass between the gears whereupon further rotation of the platen is prevented until the finger 5 has been swung outwardly, adjusted upon the face of the gear 2 and. reset.

What is claimed is:-. a

The combination with a typewriter platen, of an adjustable automatic stop including a gear revoluble with and having its axis fixed relative to the platen, another gear meshing with the platen er, a combined stop and inso dex extendin rom the axis of the driven gear and adjustable angularly to different positions on said gear, said stop and index being shiftable laterally into engagement with any of the teeth on its gear, sald stop and index being movable by the rotation of the platen, into the pass between the gears to stop the rotation of the platen.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

FRANCES GRAY.

Witnesses:

HARRY M. GRAY, Hum B. 

